Audioconnection wrote:
"...the only way to get a wide listening window is to use a speaker that is so defuse that it can't possibly have a "sweet spot". The higher resolution and more transparent a speaker the smaller and sweeter the sweet spot. It is simple physics primarily because there is only one spot where the listener is the same distance away from both speakers."
What you're overlooking is that the ear localizes sound sources by TWO mechanisms: Arrival time AND intensity. If we can make the far speaker louder than the near one for off-centerline listeners, we can offset the earlier arrival time of the near speaker, and deliver decent soundstaging for off-centerline listeners. The way to do this is with controlled directivity and proper setup, and the end result is much more effective than simply using a diffuse speaker. This sort of setup will work better for some listening postions than for others, but will never be worse than the diffuse speaker for off-centerline listeners, and will still give very good imaging for listeners in the traditional "sweet spot" because of significantly reduced early sidewall interaction (due to the relatively narrow pattern and strong toe-in).
Duke